中文摘要：

以硫氮杂冠醚化合物为离子载体,制备了一种高选择性聚合物膜汞离子选择性电极。通过对电极膜的组成及活化条件进行优化,电极在3.0×10-8～1.0×10-4 mol/L的范围内对汞离子呈能斯特响应,响应斜率为31.2mV/dec,检出限为2.0×10-8 mol/L。该电极对大多数常见的金属离子具有良好的选择性,并可作为指示电极用于电位滴定。

英文摘要：

A highly selective polymeric membrane Hg2＋ electrode was developed in this study.The values of selectivity coefficients showed that most interfering ions had no significant interference with the determination of Hg2＋.Calibration curves were obtained by using pH=4.40 HAc-NaAc buffer solution as background solution.The electrode showed a good linear response for Hg2＋ over a wide concentration range from 3.0×10-8 to 1.0×10-4 mol/L,with a near-Nernstian slope of 31.2 ± 0.1 mV/dec and a detection limit of 2.0×10-8 mol/L.The proposed Hg2＋-ISE has been successfully used for the titration of Hg2＋ with EDTA.